Core breaker and hoister



Oct. 8, 1929. c. WILD 1,730,705

CORE BREAKER AND HQISTER Filed 001:. 27, 1927 2 Sheets-Sheet 1 F13 1. Fi 2.

In venior.

Oct. 8, 1929. c. WILD 1,730,705

CORE BREAKER AND HOISTER Filed Oct. 27, 1927 2 Sheets-Sheet 2 a if 1|||||':| 'IIHH 0 3/ Inventor.

Patented a. 8, 1929 1,730,705

4 UNITED STATES PATENT. OFFICE CHARLES WILD, OF EUREKA, CALIFORNIA cons BREAKER am) nors'rna Application filed October 27, 1927. Serial No. 229,147. i

This invention relates to mechanism for use in well drilling and is especially designed to be used in connection with the well drill patented Sept. 27, 1927, No. 1,643,730 or with the well boring machine patented ept. 27, 1927, No. l',643,7 31. These machines operate to drill an annular shaped-hole to a certain depth and then be withdrawn from the well, leaving a central core. The core, if the well is drilled through solid rock, must be broken off at the bottom of the hole before it can be removed, but if the well is drilled through soft or disintegrated material the core is often a mass of. loose'ma'terial which must be scooped up for removal to the surface of the ound. Drilling a well is accomplished by t alternate use of the drilling device and the core remover.

The object of the present invention is to provide means for removing to the surface of the ground, the solid core or the loose material remaining at the bottom of the hole formed by the well drilling machine, of the 7 character mentioned, after the saidfnac'hine has been removed from the hole.

An important ob'ect of the invention is to provide a device 0 the character described, which may be operated with facility, and one which will operate to grip and retain the core materialafter breakin said core off, or scoo ing it up, when the evice moves upwardly after it has reached the bottom of the hole formed by the well'drilling machine.

With the foregoing and other objects in view which will appear as the description roceeds, the invention resides in the com- Bination and arrangement of parts and in the detailsof construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without de arting from the spirit of the invention.

efe'rrmg to the drawings Fig. 1 is a vertical'section through the cage of'a device constructed according to this invention, showing two shovels and their operating devices in the locked position, other I parts being omitted for clearness. Fig. 2 is a plan view, from above, of the complete device. Fig. 3 is a sectional lan view, taken on thellne 33 in Fig. 1. ig. 4 is a view simllar to Fig. 1, but shows the shovels unlocked and operated. so as to engage the material between them. Fig. 5 is a sectional plan view taken through the cage on the line 55 1n F1 4. Fig. 6 is a detail view of one shovel. Flg. 1s a detail side view of a portion of the cage showmg the parts 5, 8, 15, and some other parts.

Referring to the drawings in detail, the dev ce includes a cage formed of pairsof vertical bars 5, arran ed in spaced relation with each ther, the upper ends thereof being connectedby means of the spider 6, while the lower ends are 'connec'tedwith the ring 7.

Mounted between each of the pairs of bars 5 1s a pair of bars, the lower extremities of which are indicated at 8, the up or extremit1es 9 are curved inwardly an provide a support for the arms 10. The lower ends 8 of the bars extend below the bottom of the ca e asshown by Figure 1 of the drawings.

he bars 8"are provided with elongated open ngs 13 in which the pivot pins 14 move the plvot pins providing means for pivotally connecting the arms 15 of the breaker points or shovel sections 16 with the bars 5, the upper extremities of the arms 15 being curved mwardly, as shown by Figure 1 of the .drawings.

Connected pivotally with the inwardly vertical arms 17 which are connected with the angularly disposed arms 18, at 19, the upper ends of the arms 18 having pivotal connection with the pairs of cage bars 5, at 20, arms 21 have pivotal connectionwith'arms 18 between the end connections 19 and 20, and extend to and have pivotal connection .with the head 22, at 23, the head being connected with the rod 24, and held thereto by means of the nut 25, the rod 24 operating through a square opening in the spider 6. The upper end of the rod 24 is formed withan opening 26 to accommodate a suitable cable or other flexible member whereby the device may be raised or lowered within a well. W

Mounted between each pair of bars 5 is an arm 10, pivotally secured thereto at 20, and

curved upper extremities of the arms 15 are.

extending to and resting, upon the upper ends of the breaker or shovel arms 15. The arms have elongated openings 11 to accommodate the pivot pins 12 which connect the hole. Figure 4 shows arms 10 out of contact with the arms 15.

The breaker sections or shovels 16 are so constructed that when they are brought into cooperative relation with each other, they will not only scra e the bottom of the hole, but will act to pic up the material scraped thereby to the end that when the device is elevated, the breaker sections or shovels 16 will carry with them the core, or the material left in the bottom of the hole by the well drilling device.

In the use of the device, the device is lowered into a well hole until it reaches the bottom thereof, whereupon the device operates to unlock the core breaker arms so that they are free to move on their pivot connections and upon the device being lifted by the cable, the breaker sections or shovels swing inwardly to the positions shown by Figure 4 of the drawings, to the end that the material in the bottom of the well hole will be picked up and carried above the surface of the ground, where an especially designed mechanism, forming the subject matterof a separate application to be filed, operates to hook under the spider atthe upper end of the core breaker and hold the device in suspension so that when the lifting cable or rope is slackened sufficiently, the moving parts of the core breaker assume their original locked positions and at the same time the core material is released and discharged into the hopper or chute of the above mentioned especially de signed mechanism, which operates to movev out of the way when the core breaker is adjusted to enter the upper end of the casing and be again lowered to the bottom of the well or prospect hole.

'I claim 1. In a device of the character described, pairs of spaced vertical bars, a spider for connecting the upper ends of the bars, a circular band member for connecting the lower ends of the bars, pairs of bars slidably supported between the bars of the first mentioned pairs of bars having inwardly-extended upper end portions, the lower portions normally extending below the bottom of the cage, elongated openings in the bars, the bars being adapted to move throughout the lengths of the elongated openings, bars pivotally supported besections, locking arms pivotally supported be- I tween the pairs of spaced vertical bars of the cage, elongated openings in the locking arms,

means having connection with the inwardly extended upper end portions of the first mentioned pairs ofslidably supported bars, for moving the locking arms out of engagement with the inwardly extended upper end portions of the pivotally supported bars having shovel sections at their lower portions, means having connection with the inwardly extended upper end portions of the shovel bars for moving the shovel sections towards and away from each other.

2. In a device of the character described, a cage adapted to be lowered to the bottom of a well, pivoted bars carrying shovel sections at their lower ends mounted within'the cage, and means for operating the pivoted bars to cause the shovel sections to move towards and away --from each other, armshaving pivotal connection with the supporting cage and having close contact with the upper ends of the shovel bars and adapted to operate to lock the shovel bars to prevent movement of the shovel bars with reference to the supporting cage, bars slidably supported by the cage and having pivotal connection with the locking arms and normally extending below the bottom of the cage, the sliding bars to operate oted to the cage and operatively connected with the release bars, and'means for operating the shovels on their pivots when unlocked.

4. A device as set forth in .claim 3, the said means for operating the shovels comprising lower arms pivoted to the shovel arms, upper inclined arms pivoted to the lower arms and to the cage, and a central lifting device operatively connected with the said upper inclined arms.

5. In a device of the character described, a cage provided with vertical bars arranged in pairs, pairs of release bars slidable vertically between the pairs of cage bars and normally projecting below the bottom of the cage, shovels provided with arms arranged between the release bars and pivoted to the cage bars, locking arms for the shovels pivoted to the cage bars and operatively connected with the said release bars, and means for operating theshovels on their pivots when unlocked.

6. A device as set forth in claim 5, the said release bars being provided with elongated openings which slide over the pivots of the shovel arms.

7. A device as set forth in claim 5, the said locking arms being provided with elongated openings which slide over the pivots of the upper end ortions of the release bars.

8. In a evice of the character described, a cage, shovels provided with arms which are pivoted to the said cage and which have inwardly projecting upper end portions, lower arms pivoted to the sald end portions,

upper inclined arms pivoted -to the lowerarms and to the cage, a central lifting device provided With a head, and arms pivotally connecting the'said head with the said upper inclined arms. y

In testimony that I claim the foregoing as my own, I nature.

CHARLES WILD.

have. hereto aifixed my sig- 

